INDEX. 



551 



Pectis prostrata, 67. 



Rosei, 77. 



Rusbyi, 77. 



Schatt'neri, 68. 



Schwarziana, 69. 



Sinaloeiisis, 69. 



stenophylla, SO. 



tenella, 72. 



iiniari.stata, 75. 

 Pectothrix, 77. 



Peirce, B. O., and Willson, R. W., 

 On the Thermal Conductivi- 

 ties of Certain Poor Conduc- 

 tors, 516. 

 Phyllanthus subcuneatus, 478. 

 Picrylchloride, Colored Compounds 



from, 171. 

 Platylyra, 287. 



californica, 288. 

 Political Economy, 213. 

 Polychfete Annelids, 223. 

 Portlandia pterosperma, 488. 

 Pouzolzia Pringlei, 476. 

 1^-oceedings of JMeetings, 503. 

 Projective Group, 491. 



Relbunium, 467. 

 Relbunium, species of, 453. 

 Aschenbornii, 470. 

 ciliatum, 4G9. 

 hirsutum, 469. 

 hypocarpium, 468. 

 Ifevigatum, 468. 

 microphyllum, 469. 

 polyplocLim, 470. 

 sphagnophilum, 468. 

 Retention and Release of Gases, 397. 

 Rettger, E. W., Xote on the Projec- 

 tive Group, 491-499. 

 Richards, T. W., Note on the Rate 

 of Dehydration of Crystallized 

 Salts, 21-27. 

 On the Cause of the Retention 

 and Release of Gases occluded 

 by the Oxides of Metals, 397- 

 425. 

 On the Temperature Coefficient 

 of the Potential of the Calomel 

 Electrode, with several different 

 supernatant Electrolytes, 1-20. 

 Richards, T. \y., and Baxter, G. P., 

 A Revision of the Atomic 

 Weight of Cobalt. First Pa- 

 per : The Analysis of Cobal- 

 tous Bromide, 113-128. 



Richards, T. W., and Cushman, A. S., 

 A Revision of the Atomic 

 Weight of Nickel. First Paper : 

 The Analysis of Nickelous Bro- 

 mide, 95-111. 



Richards, T. W., and Merigold, B. S., 

 On the Cuprosanimonium Bro» 

 mides and the Cuprammonium 

 Sulphocyanates, 129-138. 



Robinson, B. L., Contributions from 

 the Gray Herbarium of Har- 

 vard University, N. S. No. 

 XHL, 303-334. 



Ropes, J. C, The Seven Days Battle 

 near Richmond, 514. 



Ruellia albiflora, 92. 



Rumford Committee, Report of, 505. 



Rumford Fund, Papers published by 

 Aid of, 1, 335, 351, 433. 



Ruprechtia fusca, 86. 

 Pringlei, 476. 



Salvia aliena, 485. 



Scleria lithosperma, 86. 



Scudder, S. H., The Orthopteran. 



Group Scudderite, 269-290. 

 Scudderia, 272. 



curvicauda, 278. 



forcipata, 287. 



furcata, 284. 



furcifera, 282. 



laticauda, 280. 



mexicana, 280. 



paronte, 282. 



pistillata, 277. 



septentrionalis, 285. 



texensis, 277. 



ungulata, 280. 

 Scudderiae, Genera of, 271. 

 Silver Rate (1700-1750), 190. 

 Snow Crystals, 431. 

 Sodic Alcoholates, Colored Com- 

 pounds from, 171. 

 Solanum lignescens, 91. 



marginatum, 486. 

 Statutes and Standing Votes, 535. 

 Stokes's Theorem, 381. 

 Story, W. E., On some Properties of 



Fourfold Space, 512. 

 Story, W. E., and Taber, H., On the 

 Locus that represents an Auto- 

 morphic Linear Transforma- 

 tion of a Bilinear Form, 508. 

 Sulphocyanates, Cuprammonium, 129. 

 Symmetropleura modesta, 287. 



